>> fascinating, thank you. >> thank you. if you want to find out more, go to cnn.com any time. just ahead, possible new clues in the investigation in the fiery crash that killed paul walker and how powerful the car he was riding in actually is. a cold case cracks wide open a college professor is killed in the revenge killing of her rapist 20 years later. she says she's being victimized all over again. [ male announcer ] 1.21 gigawatts. today, that's easy. ge is revolutionizing power. supercharging turbines with advanced hardware and innovative software. using data predictively to help power entire cities. so the turbines of today... will power us all... into the future. ♪